Round-Base Weld Nuts | McMaster-Carr

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338 Products

About Nuts, Materials, and Finishes

Steel Round-Base Weld Nuts

A smooth base provides more contact with the mating surface than weld nuts with projections.

Metric Steel Round-Base Weld Nuts

A smooth base on these metric nuts provides more contact with the mating surface than weld nuts with projections

Stainless Steel Round-Base Weld Nuts

Weld these nuts to stainless steel surfaces.

Round-Base Weld Nuts with Projections

Projections on the base concentrate the weld and provide room for heat to dissipate.

Steel Low-Profile Round-Base
Weld Nuts with Projections

These steel nuts have a short collar to fit in low-clearance areas.

Stainless Steel Low-Profile Round-Base
Weld Nuts with Projections

Add corrosion-resistant threads to stainless steel sheets, even in spaces with low clearance.

Stainless Steel Adhesive-Ready Nuts

Add strong threads to material that’s too difficult to drill or too thin to grip a threaded insert. Made of 316 stainless steel, they resist corrosion from salt water and harsh chemicals.

Steel Adhesive-Ready Nuts

Add strong threads to material that you can't drill or that's too thin to grip a threaded insert. These nuts are ideal for brittle plastics or tough composites, such as acrylic or carbon fiber.

Stainless Steel Narrow-Base Adhesive-Ready Nuts

Add corrosion-resistant threads to channels, corners, and other tight spaces without drilling a hole. Glue these nuts on to thin surfaces and materials too hard and brittle to drill, such as acrylic and carbon fiber.

Tube-End Weld Nuts

Weld these nuts to round uncoated metal tubes to attach threaded parts, such as rod ends.

Left-Hand Threaded Tube-End Weld Nuts

Use these tube-end weld nuts with left-hand threaded fasteners.